Question

I have a simple program written in Java:

package edu.oakland.lecture;

public class Alfa {

    int a;

    public int getAttribute() {
        System.out.println("returning value of a");
        return a;
    }

    public static void main(String []args) {
        Alfa alfa = new Alfa();
        int number = alfa.getAttribute();
        System.out.println(number);
    }
}

It compiles with javac on both windows (xp) and os x (lion), but it only runs on windows.

This is the command I use to compile the program:

javac -d bin source/edu/oakland/lecture/Alfa.java

This is the command I use to execute it:

java -classpath bin; edu.oakland.lecture.Alfa (I also tried -cp instead of -classpath in Terminal)

As I mentioned, I get the expected output on windows side, but I get this message on the os x side:

-bash: edu.oakland.lecture.Alfa: command not found

I know it has to be something stupid simple; what am I overlooking?

Thanks!

Answer 1

The classpath separator on UNIX-like systems (such as OS X) is ‘:’, not ‘;’. Your command should just be

java -classpath bin edu.oakland.lecture.Alfa

If you actually did have several different components to your classpath, it would look like:

java -classpath bin:foo edu.oakland.lecture.Alfa